Can You Put A Silicone Roof Coating Over Acrylic?

Posted on March 26, 2024

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Oconnor Roofing

A roof’s purpose is to protect your home from harsh weather conditions and other natural events. But overtime, these conditions can overpower the roofing materials. This happens more often with flat roofing systems. To give your flat roof an extra level of protection, roof coatings are used. 

Two types of roof coatings dominate the market: silicone and acrylic coatings. While both of these flat roof coating options are durable, silicone coatings have made a strong impact in the last few years. So naturally, the homeowners who have installed an acrylic coating may be wondering, can you put silicone roof coating over acrylic? 

Yes, you can apply a silicone coating over an existing acrylic one, but the answer isn’t exactly straightforward due to the number of factors involved. But before we talk about them, let’s understand both these roof coatings. 

What Is A Silicone Roof Coating?

Silicone roof coatings are known for their durability and weather resistance. This sealant forms a seamless membrane that protects the roof from water, UV rays, and other environmental factors. Silicone coatings are also highly reflective, which helps in reducing energy costs by keeping the building cooler.

Silicone Roof Coating

What Is An Acrylic Roof Coating?

Acrylic roof coatings are another popular choice for roof protection. It offers excellent UV resistance and can help extend the life of your roof. Acrylic coatings are also known for their flexibility, which allows them to expand and contract with the roof’s movement.

Silicone Roof Coating

Compatibility of Silicone and Acrylic Coatings

While it is possible to apply a silicone roof coating over acrylic, it is not always recommended. The compatibility of these two coatings depends on several factors, including the condition of the existing acrylic coating and the type of silicone coating being applied.

Factors to Consider

Condition of the Existing Acrylic Coating:

If the acrylic coating is in good condition, with no signs of peeling or cracking, it may be suitable to apply silicone over it. However, if the acrylic coating is damaged, it is best to remove it before applying the silicone one.

Type of Silicone Coating: 

Not all silicone coatings are compatible with acrylic. It is essential to choose a silicone coating that is specifically formulated for use over acrylic. These coatings are designed to adhere to acrylic surfaces and provide a seamless finish.

Best Silicone Roof Coatings For Your Flat Roof

There are several great options for silicone roof coatings for flat roofs. Here are three options that you may want to consider:

  • GacoFlex Silicone Roof Coatings
  • Henry Pro-Grade® 988 Silicone White Roof Coating
  • Mule Hide 100% Silicone Roof Coating

All these coatings are popular and have been recommended by contractors for years. Check out the features of each or consult a roofing professional before choosing one. 

How To Install A Silicone Coating

Applying silicone roof coating over acrylic requires you to do the following: 

  • Thorough cleaning, repairing any damage, and ensuring the roof surface is dry. 
  • If needed, apply a primer compatible with both coatings. 
  • After primer, apply the silicone coating evenly using a brush, roller, or sprayer. 
  • Allow each coat to dry before applying the next. Inspect and touch up as necessary. 
  • Allow the final coat to cure fully before exposing it to foot traffic or weather. 
  • Regular maintenance is key to extending the life of the coating. 

Always follow the manufacturer’s instructions and consider consulting a professional roofer for guidance.

Best Roof Coating Installation in WNY

The installation of the best roof coating is a crucial step in protecting your property from harsh weather conditions and extending the lifespan of your flat roof. With the right coating and proper installation techniques, you can enjoy a durable and long-lasting roof that requires minimal maintenance.

If you want the best roofing services, trust the experts at OConnor Contracting. We offer flat roof repair and maintenance services, including coating installations. Give us a call today!

Oconnor Roofing
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